package com.lei.singleton;

/**
 * @author: leiGer
 * @Date: 2021/06/27
 * @Time: 22:45
 */
public class Mgr05 {
    private static Mgr05 INSTANCE;
    private Mgr05(){}
    public static Mgr05 getInstance(){
        if(INSTANCE == null){
            synchronized (Mgr05.class){
                try {
                    Thread.sleep(1);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                INSTANCE = new Mgr05();
            }

        }
        return INSTANCE;
    }

    public static void main(String[] args) {
        for (int i = 0; i < 100; i++) {
            new Thread(()->{
                System.out.println(Mgr05.getInstance().hashCode());
            }).start();
        }
    }
}
